# Metrics Reference

 

# Metrics reference documentation

## Metric types

Each metric have one of the types documented [here](metric-units.html).

## Metric aggregator suffixes

Metrics are collected over a time period so a metric reading must aggregate individual samples over this period. These are specified by adding the aggregator suffix to the metric name: `metric.name.aggregator`.

The following aggregators are available:

| Aggregator name (metric suffix) | Explanation |
| --- | --- |
| 95percentile | The 95 percentile of samples in the period |
| 99percentile | The 99 percentile of samples in the period |
| average | The average of samples in the period |
| count | The count of samples in the period |
| last | The last value sampled in the period |
| max | The max value sampled in the period |
| min | The min value sampled in the period |
| rate | The count of samples divided by the length of the period in seconds |
| sum | The sum of the sampled values in the period |

## Metric sets defined in Vespa

A metric set is a collection of metrics which can be referenced for convenience. The following metric sets are defined in Vespa.

- [Vespa Metric Set Reference](vespa-metric-set.html)
- [Default Metric Set Reference](default-metric-set.html)
- [Metric Units Reference](metric-units.html)
- [Container Metrics Reference](container.html)
- [Distributor Metrics Reference](distributor.html)
- [Searchnode Metrics Reference](searchnode.html)
- [Storage Metrics Reference](storage.html)
- [Configserver Metrics Reference](configserver.html)
- [Logd Metrics Reference](logd.html)
- [Node Admin Metrics Reference](nodeadmin.html)
- [Slobrok Metrics Reference](slobrok.html)
- [Clustercontroller Metrics Reference](clustercontroller.html)
- [Sentinel Metrics Reference](sentinel.html)

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